CBM America CBM1000 - Handbuch (Seite 46)

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6.2.2 Electrical Characteristics
Input signal level (STB, DATA 1-8)
All the input signals are at the C-MOS level.
“HIGH” level: 4.0 V minimum
“LOW” level: 0.9 V maximum
Output signal level
All the output signals are at the C-MOS level.
“HIGH” level: 2.4 V minimum
“LOW” level: 0.4 V maximum
Input and output conditions
All the input signals, DATA 1-8, are each pulled up with 50 k
Ω
resistor, and the
other input signals are each pulled up with a 3.3 k
Ω
resistor.
Twisted Pair Wire
Twisted Pair Wire
All the output signals, DATA 1-8, are each pulled up with a 50 k
Ω
resistor, and the
other output signals are each pulled up with a 3.3 k
Ω
resistor.
[Host Side] [Printer Side]
[Printer Side] [Host Side]
Vcc
Vcc